Right now , when you are in a channel, replying to a post vs starting a new post is too easily confused, leading to many posts that are meant to be "replies" to existing conversations.

Break replies into their own column, making it obvious when you are creating a post vs. replying to a post. Using simple mspaint and some cut-n-paste powers, this was rather trivial simply by consuming the massive dead space in the UX. See attached.